/
ofTrueTypeFont.cpp
1427 lines (1217 loc) · 44.9 KB
/
ofTrueTypeFont.cpp
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#include "ofTrueTypeFont.h"
//--------------------------
#include <ft2build.h>
#ifdef TARGET_LINUX
#include <fontconfig/fontconfig.h>
#endif
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include FT_OUTLINE_H
#include FT_TRIGONOMETRY_H
#include <algorithm>
#include <numeric>
#include "ofGraphics.h"
#include "utf8.h"
using namespace std;
const ofUnicode::range ofUnicode::Space {32, 32};
const ofUnicode::range ofUnicode::IdeographicSpace {0x3000, 0x3000};
const ofUnicode::range ofUnicode::Latin {32, 0x007F};
const ofUnicode::range ofUnicode::Latin1Supplement {32,0x00FF};
const ofUnicode::range ofUnicode::LatinA {0x0100,0x017F};
const ofUnicode::range ofUnicode::Greek {0x0370, 0x03FF};
const ofUnicode::range ofUnicode::Cyrillic {0x0400, 0x04FF};
const ofUnicode::range ofUnicode::Arabic {0x0600, 0x077F};
const ofUnicode::range ofUnicode::ArabicSupplement {0x0750, 0x077F};
const ofUnicode::range ofUnicode::ArabicExtendedA {0x08A0, 0x08FF};
const ofUnicode::range ofUnicode::Devanagari {0x0900, 0x097F};
const ofUnicode::range ofUnicode::HangulJamo {0x1100, 0x11FF};
const ofUnicode::range ofUnicode::VedicExtensions {0x1CD0, 0x1CFF};
const ofUnicode::range ofUnicode::LatinExtendedAdditional {0x1E00, 0x1EFF};
const ofUnicode::range ofUnicode::GreekExtended {0x1F00, 0x1FFF};
const ofUnicode::range ofUnicode::GeneralPunctuation {0x2000, 0x206F};
const ofUnicode::range ofUnicode::SuperAndSubScripts {0x2070, 0x209F};
const ofUnicode::range ofUnicode::CurrencySymbols {0x20A0, 0x20CF};
const ofUnicode::range ofUnicode::LetterLikeSymbols {0x2100, 0x214F};
const ofUnicode::range ofUnicode::NumberForms {0x2150, 0x218F};
const ofUnicode::range ofUnicode::Arrows {0x2190, 0x21FF};
const ofUnicode::range ofUnicode::MathOperators {0x2200, 0x22FF};
const ofUnicode::range ofUnicode::MiscTechnical {0x2300, 0x23FF};
const ofUnicode::range ofUnicode::BoxDrawing {0x2500, 0x257F};
const ofUnicode::range ofUnicode::BlockElement {0x2580, 0x259F};
const ofUnicode::range ofUnicode::GeometricShapes {0x25A0, 0x25FF};
const ofUnicode::range ofUnicode::MiscSymbols {0x2600, 0x26FF};
const ofUnicode::range ofUnicode::Dingbats {0x2700, 0x27BF};
const ofUnicode::range ofUnicode::Hiragana {0x3040, 0x309F};
const ofUnicode::range ofUnicode::Katakana {0x30A0, 0x30FF};
const ofUnicode::range ofUnicode::HangulCompatJamo {0x3130, 0x318F};
const ofUnicode::range ofUnicode::KatakanaPhoneticExtensions {0x31F0, 0x31FF};
const ofUnicode::range ofUnicode::CJKLettersAndMonths {0x3200, 0x32FF};
const ofUnicode::range ofUnicode::CJKUnified {0x4E00, 0x9FD5};
const ofUnicode::range ofUnicode::DevanagariExtended {0xA8E0, 0xA8FF};
const ofUnicode::range ofUnicode::HangulExtendedA {0xA960, 0xA97F};
const ofUnicode::range ofUnicode::HangulSyllables {0xAC00, 0xD7AF};
const ofUnicode::range ofUnicode::HangulExtendedB {0xD7B0, 0xD7FF};
const ofUnicode::range ofUnicode::AlphabeticPresentationForms {0xFB00, 0xFB4F};
const ofUnicode::range ofUnicode::ArabicPresFormsA {0xFB50, 0xFDFF};
const ofUnicode::range ofUnicode::ArabicPresFormsB {0xFE70, 0xFEFF};
const ofUnicode::range ofUnicode::KatakanaHalfAndFullwidthForms {0xFF00, 0xFFEF};
const ofUnicode::range ofUnicode::KanaSupplement {0x1B000, 0x1B0FF};
const ofUnicode::range ofUnicode::RumiNumericalSymbols {0x10E60, 0x10E7F};
const ofUnicode::range ofUnicode::ArabicMath {0x1EE00, 0x1EEFF};
const ofUnicode::range ofUnicode::MiscSymbolsAndPictographs {0x1F300, 0x1F5FF};
const ofUnicode::range ofUnicode::Emoticons {0x1F601, 0x1F64F};
const ofUnicode::range ofUnicode::TransportAndMap {0x1F680, 0x1F6FF};
const ofUnicode::range ofUnicode::EnclosedCharacters {0x24C2, 0x1F251};
const ofUnicode::range ofUnicode::Uncategorized {0x00A9, 0x1F5FF};
const ofUnicode::range ofUnicode::AdditionalEmoticons {0x1F600, 0x1F636};
const ofUnicode::range ofUnicode::AdditionalTransportAndMap {0x1F681, 0x1F6C5};
const ofUnicode::range ofUnicode::OtherAdditionalSymbols {0x1F30D, 0x1F567};
const std::initializer_list<ofUnicode::range> ofAlphabet::Emoji {
ofUnicode::Space,
ofUnicode::Emoticons,
ofUnicode::Dingbats,
ofUnicode::Uncategorized,
ofUnicode::TransportAndMap,
ofUnicode::EnclosedCharacters,
ofUnicode::OtherAdditionalSymbols,
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Japanese {
ofUnicode::Space,
ofUnicode::IdeographicSpace,
ofUnicode::Hiragana,
ofUnicode::Katakana,
ofUnicode::KatakanaPhoneticExtensions,
ofUnicode::CJKLettersAndMonths,
ofUnicode::CJKUnified
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Chinese {
ofUnicode::Space,
ofUnicode::IdeographicSpace,
ofUnicode::CJKLettersAndMonths,
ofUnicode::CJKUnified
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Korean {
ofUnicode::Space,
ofUnicode::IdeographicSpace,
ofUnicode::HangulJamo,
ofUnicode::HangulCompatJamo,
ofUnicode::HangulExtendedA,
ofUnicode::HangulExtendedB,
ofUnicode::HangulSyllables
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Arabic {
ofUnicode::Space,
ofUnicode::Arabic,
ofUnicode::ArabicExtendedA,
ofUnicode::ArabicMath,
ofUnicode::ArabicPresFormsA,
ofUnicode::ArabicPresFormsB
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Devanagari {
ofUnicode::Devanagari,
ofUnicode::DevanagariExtended,
ofUnicode::VedicExtensions
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Latin {
ofUnicode::Latin1Supplement,
ofUnicode::LatinExtendedAdditional,
ofUnicode::Latin,
ofUnicode::LatinA,
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Greek {
ofUnicode::Space,
ofUnicode::Greek,
ofUnicode::GreekExtended
};
const std::initializer_list<ofUnicode::range> ofAlphabet::Cyrillic {
ofUnicode::Space,
ofUnicode::Cyrillic
};
const ofTrueTypeFont::glyphProps ofTrueTypeFont::invalidProps{
0,
0,
0,
0,
0,0,
0,0,0,0,
0,
0.0f,0.0f,
0.0f,0.0f,0.0f,0.0f
};
const size_t TAB_WIDTH = 4; /// Number of spaces per tab
static bool printVectorInfo = false;
static int ttfGlobalDpi = 96;
static bool librariesInitialized = false;
static FT_Library library;
//--------------------------------------------------------
void ofTrueTypeShutdown(){
#ifdef TARGET_LINUX
// This crashes if gtk was called at any time cause pango leaks
// its fc related objects: https://github.com/openframeworks/openFrameworks/issues/5061
//FcFini();
#endif
}
//--------------------------------------------------------
static ofPath makeContoursForCharacter(FT_Face face){
//int num = face->glyph->outline.n_points;
int nContours = face->glyph->outline.n_contours;
int startPos = 0;
char * tags = face->glyph->outline.tags;
FT_Vector * vec = face->glyph->outline.points;
ofPath charOutlines;
charOutlines.setUseShapeColor(false);
charOutlines.setPolyWindingMode(OF_POLY_WINDING_NONZERO);
for(int k = 0; k < nContours; k++){
if( k > 0 ){
startPos = face->glyph->outline.contours[k-1]+1;
}
int endPos = face->glyph->outline.contours[k]+1;
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "--NEW CONTOUR";
}
//vector <ofPoint> testOutline;
glm::vec3 lastPoint;
for(int j = startPos; j < endPos; j++){
if( FT_CURVE_TAG(tags[j]) == FT_CURVE_TAG_ON ){
lastPoint = {(float)vec[j].x, (float)-vec[j].y, 0.f};
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "flag[" << j << "] is set to 1 - regular point - " << lastPoint.x << lastPoint.y;
}
charOutlines.lineTo(lastPoint/64);
}else{
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "flag[" << j << "] is set to 0 - control point";
}
if( FT_CURVE_TAG(tags[j]) == FT_CURVE_TAG_CUBIC ){
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "- bit 2 is set to 2 - CUBIC";
}
int prevPoint = j-1;
if( j == 0){
prevPoint = endPos-1;
}
int nextIndex = j+1;
if( nextIndex >= endPos){
nextIndex = startPos;
}
glm::vec3 nextPoint( (float)vec[nextIndex].x, -(float)vec[nextIndex].y, 0.f );
//we need two control points to draw a cubic bezier
bool lastPointCubic = ( FT_CURVE_TAG(tags[prevPoint]) != FT_CURVE_TAG_ON ) && ( FT_CURVE_TAG(tags[prevPoint]) == FT_CURVE_TAG_CUBIC);
if( lastPointCubic ){
glm::vec3 controlPoint1((float)vec[prevPoint].x, (float)-vec[prevPoint].y, 0.f);
glm::vec3 controlPoint2((float)vec[j].x, (float)-vec[j].y, 0.f);
glm::vec3 nextPoint((float) vec[nextIndex].x, -(float) vec[nextIndex].y, 0.f);
//cubic_bezier(testOutline, lastPoint.x, lastPoint.y, controlPoint1.x, controlPoint1.y, controlPoint2.x, controlPoint2.y, nextPoint.x, nextPoint.y, 8);
charOutlines.bezierTo(controlPoint1.x/64, controlPoint1.y/64, controlPoint2.x/64, controlPoint2.y/64, nextPoint.x/64, nextPoint.y/64);
}
}else{
glm::vec3 conicPoint( (float)vec[j].x, -(float)vec[j].y, 0.f );
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "- bit 2 is set to 0 - conic- ";
ofLogNotice("ofTrueTypeFont") << "--- conicPoint point is " << conicPoint.x << conicPoint.y;
}
//If the first point is connic and the last point is connic then we need to create a virutal point which acts as a wrap around
if( j == startPos ){
bool prevIsConnic = ( FT_CURVE_TAG( tags[endPos-1] ) != FT_CURVE_TAG_ON ) && ( FT_CURVE_TAG( tags[endPos-1]) != FT_CURVE_TAG_CUBIC );
if( prevIsConnic ){
glm::vec3 lastConnic((float)vec[endPos - 1].x, (float)-vec[endPos - 1].y, 0.f);
lastPoint = (conicPoint + lastConnic) / 2;
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "NEED TO MIX WITH LAST";
ofLogNotice("ofTrueTypeFont") << "last is " << lastPoint.x << " " << lastPoint.y;
}
}
}
//bool doubleConic = false;
int nextIndex = j+1;
if( nextIndex >= endPos){
nextIndex = startPos;
}
glm::vec3 nextPoint( (float)vec[nextIndex].x, -(float)vec[nextIndex].y, 0.f );
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "--- last point is " << lastPoint.x << " " << lastPoint.y;
}
bool nextIsConnic = ( FT_CURVE_TAG( tags[nextIndex] ) != FT_CURVE_TAG_ON ) && ( FT_CURVE_TAG( tags[nextIndex]) != FT_CURVE_TAG_CUBIC );
//create a 'virtual on point' if we have two connic points
if( nextIsConnic ){
nextPoint = (conicPoint + nextPoint) / 2;
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "|_______ double connic!";
}
}
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "--- next point is " << nextPoint.x << " " << nextPoint.y;
}
//quad_bezier(testOutline, lastPoint.x, lastPoint.y, conicPoint.x, conicPoint.y, nextPoint.x, nextPoint.y, 8);
charOutlines.quadBezierTo(lastPoint.x/64, lastPoint.y/64, conicPoint.x/64, conicPoint.y/64, nextPoint.x/64, nextPoint.y/64);
if( nextIsConnic ){
lastPoint = nextPoint;
}
}
}
//end for
}
charOutlines.close();
}
return charOutlines;
}
#ifdef TARGET_OSX
//------------------------------------------------------------------
static std::string osxFontPathByName(const std::string& fontname){
CFStringRef targetName = CFStringCreateWithCString(nullptr, fontname.c_str(), kCFStringEncodingUTF8);
CTFontDescriptorRef targetDescriptor = CTFontDescriptorCreateWithNameAndSize(targetName, 0.0);
CFURLRef targetURL = (CFURLRef) CTFontDescriptorCopyAttribute(targetDescriptor, kCTFontURLAttribute);
string fontPath = "";
if(targetURL) {
UInt8 buffer[PATH_MAX];
CFURLGetFileSystemRepresentation(targetURL, true, buffer, PATH_MAX);
fontPath = std::string((char *)buffer);
CFRelease(targetURL);
}
CFRelease(targetName);
CFRelease(targetDescriptor);
return fontPath;
}
#endif
#ifdef TARGET_WIN32
#include <map>
// font font face -> file name name mapping
static map<std::string, std::string> fonts_table;
// read font linking information from registry, and store in std::map
//------------------------------------------------------------------
void initWindows(){
LONG l_ret;
const wchar_t *Fonts = L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
HKEY key_ft;
l_ret = RegOpenKeyExW(HKEY_LOCAL_MACHINE, Fonts, 0, KEY_QUERY_VALUE, &key_ft);
if (l_ret != ERROR_SUCCESS){
ofLogError("ofTrueTypeFont") << "initWindows(): couldn't find fonts registery key";
return;
}
DWORD value_count;
DWORD max_data_len;
wchar_t value_name[2048];
BYTE *value_data;
// get font_file_name -> font_face mapping from the "Fonts" registry key
l_ret = RegQueryInfoKeyW(key_ft, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, &value_count, nullptr, &max_data_len, nullptr, nullptr);
if(l_ret != ERROR_SUCCESS){
ofLogError("ofTrueTypeFont") << "initWindows(): couldn't query registery for fonts";
return;
}
// no font installed
if (value_count == 0){
ofLogError("ofTrueTypeFont") << "initWindows(): couldn't find any fonts in registery";
return;
}
// max_data_len is in BYTE
value_data = static_cast<BYTE *>(HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS, max_data_len));
if(value_data == nullptr) return;
char value_name_char[2048];
char value_data_char[2048];
/*char ppidl[2048];
char fontsPath[2048];
SHGetKnownFolderIDList(FOLDERID_Fonts, 0, nullptr, &ppidl);
SHGetPathFromIDList(ppidl,&fontsPath);*/
std::string fontsDir = getenv ("windir");
fontsDir += "\\Fonts\\";
for (DWORD i = 0; i < value_count; ++i)
{
DWORD name_len = 2048;
DWORD data_len = max_data_len;
l_ret = RegEnumValueW(key_ft, i, value_name, &name_len, nullptr, nullptr, value_data, &data_len);
if(l_ret != ERROR_SUCCESS){
ofLogError("ofTrueTypeFont") << "initWindows(): couldn't read registry key for font type";
continue;
}
wcstombs(value_name_char,value_name,2048);
wcstombs(value_data_char,reinterpret_cast<wchar_t *>(value_data),2048);
std::string curr_face = value_name_char;
std::string font_file = value_data_char;
curr_face = curr_face.substr(0, curr_face.find('(') - 1);
fonts_table[curr_face] = fontsDir + font_file;
}
HeapFree(GetProcessHeap(), 0, value_data);
l_ret = RegCloseKey(key_ft);
}
static std::string winFontPathByName(const std::string& fontname ){
if(fonts_table.find(fontname)!=fonts_table.end()){
return fonts_table[fontname];
}
for(map<std::string,std::string>::iterator it = fonts_table.begin(); it!=fonts_table.end(); it++){
if(ofIsStringInString(ofToLower(it->first),ofToLower(fontname))) return it->second;
}
return "";
}
#endif
#ifdef TARGET_LINUX
//------------------------------------------------------------------
static std::string linuxFontPathByName(const std::string& fontname){
std::string filename;
FcPattern * pattern = FcNameParse((const FcChar8*)fontname.c_str());
FcBool ret = FcConfigSubstitute(0,pattern,FcMatchPattern);
if(!ret){
ofLogError() << "linuxFontPathByName(): couldn't find font file or system font with name \"" << fontname << "\"";
return "";
}
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern * fontMatch=nullptr;
fontMatch = FcFontMatch(0,pattern,&result);
if(!fontMatch){
ofLogError() << "linuxFontPathByName(): couldn't match font file or system font with name \"" << fontname << "\"";
FcPatternDestroy(fontMatch);
FcPatternDestroy(pattern);
return "";
}
FcChar8 *file;
if (FcPatternGetString (fontMatch, FC_FILE, 0, &file) == FcResultMatch){
filename = (const char*)file;
}else{
ofLogError() << "linuxFontPathByName(): couldn't find font match for \"" << fontname << "\"";
FcPatternDestroy(fontMatch);
FcPatternDestroy(pattern);
return "";
}
FcPatternDestroy(fontMatch);
FcPatternDestroy(pattern);
return filename;
}
#endif
//-----------------------------------------------------------
static bool loadFontFace(const std::filesystem::path& _fontname, FT_Face & face, std::filesystem::path & filename){
std::filesystem::path fontname = _fontname;
filename = ofToDataPath(_fontname,true);
ofFile fontFile(filename,ofFile::Reference);
int fontID = 0;
if(!fontFile.exists()){
#ifdef TARGET_LINUX
filename = linuxFontPathByName(fontname.string());
#elif defined(TARGET_OSX)
if(fontname==OF_TTF_SANS){
fontname = "Helvetica Neue";
#if MAC_OS_X_VERSION_10_13 && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13
fontID = 0;
#else
fontID = 4;
#endif
}else if(fontname==OF_TTF_SERIF){
fontname = "Times New Roman";
}else if(fontname==OF_TTF_MONO){
fontname = "Menlo Regular";
}
filename = osxFontPathByName(fontname.string());
#elif defined(TARGET_WIN32)
if(fontname==OF_TTF_SANS){
fontname = "Arial";
}else if(fontname==OF_TTF_SERIF){
fontname = "Times New Roman";
}else if(fontname==OF_TTF_MONO){
fontname = "Courier New";
}
filename = winFontPathByName(fontname.string());
#endif
if(filename == "" ){
ofLogError("ofTrueTypeFont") << "loadFontFace(): couldn't find font \"" << fontname << "\"";
return false;
}
ofLogVerbose("ofTrueTypeFont") << "loadFontFace(): \"" << fontname << "\" not a file in data loading system font from \"" << filename << "\"";
}
FT_Error err;
err = FT_New_Face( library, filename.string().c_str(), fontID, &face );
if (err) {
// simple error table in lieu of full table (see fterrors.h)
string errorString = "unknown freetype";
if(err == 1) errorString = "INVALID FILENAME";
ofLogError("ofTrueTypeFont") << "loadFontFace(): couldn't create new face for \"" << fontname << "\": FT_Error " << err << " " << errorString;
return false;
}
return true;
}
//--------------------------------------------------------
void ofTrueTypeFont::setGlobalDpi(int newDpi){
ttfGlobalDpi = newDpi;
}
#if defined(TARGET_ANDROID)
#include "ofxAndroidUtils.h"
#endif
//------------------------------------------------------------------
bool ofTrueTypeFont::initLibraries(){
if(!librariesInitialized){
FT_Error err;
err = FT_Init_FreeType( &library );
if (err){
ofLogError("ofTrueTypeFont") << "loadFont(): couldn't initialize Freetype lib: FT_Error " << err;
return false;
}
#ifdef TARGET_LINUX
FcBool result = FcInit();
if(!result){
return false;
}
#endif
#ifdef TARGET_WIN32
initWindows();
#endif
librariesInitialized = true;
}
return true;
}
//------------------------------------------------------------------
ofTrueTypeFont::ofTrueTypeFont()
:settings("",0){
bLoadedOk = false;
letterSpacing = 1;
spaceSize = 1;
fontUnitScale = 1;
stringQuads.setMode(OF_PRIMITIVE_TRIANGLES);
ascenderHeight = 0;
descenderHeight = 0;
lineHeight = 0;
}
//------------------------------------------------------------------
ofTrueTypeFont::~ofTrueTypeFont(){
#if defined(TARGET_ANDROID)
ofRemoveListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofRemoveListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
#endif
}
//------------------------------------------------------------------
ofTrueTypeFont::ofTrueTypeFont(const ofTrueTypeFont& mom)
:settings(mom.settings){
#if defined(TARGET_ANDROID)
if(mom.isLoaded()){
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
}
#endif
bLoadedOk = mom.bLoadedOk;
charOutlines = mom.charOutlines;
charOutlinesNonVFlipped = mom.charOutlinesNonVFlipped;
charOutlinesContour = mom.charOutlinesContour;
charOutlinesNonVFlippedContour = mom.charOutlinesNonVFlippedContour;
lineHeight = mom.lineHeight;
ascenderHeight = mom.ascenderHeight;
descenderHeight = mom.descenderHeight;
glyphBBox = mom.glyphBBox;
letterSpacing = mom.letterSpacing;
spaceSize = mom.spaceSize;
fontUnitScale = mom.fontUnitScale;
cps = mom.cps; // properties for each character
settings = mom.settings;
glyphIndexMap = mom.glyphIndexMap;
texAtlas = mom.texAtlas;
face = mom.face;
}
//------------------------------------------------------------------
ofTrueTypeFont & ofTrueTypeFont::operator=(const ofTrueTypeFont& mom){
if(this == &mom) return *this;
#if defined(TARGET_ANDROID)
if(mom.isLoaded()){
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
}
#endif
settings = mom.settings;
bLoadedOk = mom.bLoadedOk;
charOutlines = mom.charOutlines;
charOutlinesNonVFlipped = mom.charOutlinesNonVFlipped;
charOutlinesContour = mom.charOutlinesContour;
charOutlinesNonVFlippedContour = mom.charOutlinesNonVFlippedContour;
lineHeight = mom.lineHeight;
ascenderHeight = mom.ascenderHeight;
descenderHeight = mom.descenderHeight;
glyphBBox = mom.glyphBBox;
letterSpacing = mom.letterSpacing;
spaceSize = mom.spaceSize;
fontUnitScale = mom.fontUnitScale;
cps = mom.cps; // properties for each character
settings = mom.settings;
glyphIndexMap = mom.glyphIndexMap;
texAtlas = mom.texAtlas;
face = mom.face;
return *this;
}
//------------------------------------------------------------------
ofTrueTypeFont::ofTrueTypeFont(ofTrueTypeFont&& mom)
:settings(std::move(mom.settings)){
#if defined(TARGET_ANDROID)
if(mom.isLoaded()){
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
}
#endif
bLoadedOk = mom.bLoadedOk;
charOutlines = std::move(mom.charOutlines);
charOutlinesNonVFlipped = std::move(mom.charOutlinesNonVFlipped);
charOutlinesContour = std::move(mom.charOutlinesContour);
charOutlinesNonVFlippedContour = std::move(mom.charOutlinesNonVFlippedContour);
lineHeight = mom.lineHeight;
ascenderHeight = mom.ascenderHeight;
descenderHeight = mom.descenderHeight;
glyphBBox = mom.glyphBBox;
letterSpacing = mom.letterSpacing;
spaceSize = mom.spaceSize;
fontUnitScale = mom.fontUnitScale;
cps = mom.cps; // properties for each character
settings = mom.settings;
glyphIndexMap = std::move(mom.glyphIndexMap);
texAtlas = mom.texAtlas;
face = mom.face;
}
//------------------------------------------------------------------
ofTrueTypeFont & ofTrueTypeFont::operator=(ofTrueTypeFont&& mom){
if(this == &mom) return *this;
#if defined(TARGET_ANDROID)
if(mom.isLoaded()){
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
}
#endif
bLoadedOk = mom.bLoadedOk;
charOutlines = std::move(mom.charOutlines);
charOutlinesNonVFlipped = std::move(mom.charOutlinesNonVFlipped);
charOutlinesContour = std::move(mom.charOutlinesContour);
charOutlinesNonVFlippedContour = std::move(mom.charOutlinesNonVFlippedContour);
lineHeight = mom.lineHeight;
ascenderHeight = mom.ascenderHeight;
descenderHeight = mom.descenderHeight;
glyphBBox = mom.glyphBBox;
letterSpacing = mom.letterSpacing;
spaceSize = mom.spaceSize;
fontUnitScale = mom.fontUnitScale;
cps = mom.cps; // properties for each character
settings = mom.settings;
glyphIndexMap = std::move(mom.glyphIndexMap);
texAtlas = mom.texAtlas;
face = mom.face;
return *this;
}
//-----------------------------------------------------------
void ofTrueTypeFont::unloadTextures(){
if(!bLoadedOk) return;
texAtlas.clear();
}
//-----------------------------------------------------------
void ofTrueTypeFont::reloadTextures(){
if(bLoadedOk) load(settings);
}
//-----------------------------------------------------------
bool ofTrueTypeFont::loadFont(string filename, int fontSize, bool bAntiAliased, bool bFullCharacterSet, bool makeContours, float simplifyAmt, int dpi) {
return load(filename, fontSize, bAntiAliased, bFullCharacterSet, makeContours, simplifyAmt, dpi);
}
//-----------------------------------------------------------
ofTrueTypeFont::glyph ofTrueTypeFont::loadGlyph(uint32_t utf8) const{
glyph aGlyph;
auto err = FT_Load_Glyph( face.get(), FT_Get_Char_Index( face.get(), utf8 ), settings.antialiased ? FT_LOAD_FORCE_AUTOHINT : FT_LOAD_DEFAULT );
if(err){
ofLogError("ofTrueTypeFont") << "loadFont(): FT_Load_Glyph failed for utf8 code " << utf8 << ": FT_Error " << err;
return aGlyph;
}
if (settings.antialiased) FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
else FT_Render_Glyph(face->glyph, FT_RENDER_MODE_MONO);
// -------------------------
// info about the character:
aGlyph.props.glyph = utf8;
aGlyph.props.height = face->glyph->metrics.height>>6;
aGlyph.props.width = face->glyph->metrics.width>>6;
aGlyph.props.bearingX = face->glyph->metrics.horiBearingX>>6;
aGlyph.props.bearingY = face->glyph->metrics.horiBearingY>>6;
aGlyph.props.xmin = face->glyph->bitmap_left;
aGlyph.props.xmax = aGlyph.props.xmin + aGlyph.props.width;
aGlyph.props.ymin = -face->glyph->bitmap_top;
aGlyph.props.ymax = aGlyph.props.ymin + aGlyph.props.height;
aGlyph.props.advance = face->glyph->metrics.horiAdvance>>6;
aGlyph.props.tW = aGlyph.props.width;
aGlyph.props.tH = aGlyph.props.height;
FT_Bitmap& bitmap= face->glyph->bitmap;
int width = bitmap.width;
int height = bitmap.rows;
if(width==0 || height==0) return aGlyph;
// Allocate Memory For The Texture Data.
aGlyph.pixels.allocate(width, height, OF_PIXELS_GRAY_ALPHA);
//-------------------------------- clear data:
aGlyph.pixels.set(0,255); // every luminance pixel = 255
aGlyph.pixels.set(1,0);
if (settings.antialiased == true){
ofPixels bitmapPixels;
bitmapPixels.setFromExternalPixels(bitmap.buffer,bitmap.width,bitmap.rows,OF_PIXELS_GRAY);
aGlyph.pixels.setChannel(1,bitmapPixels);
} else {
//-----------------------------------
// true type packs monochrome info in a
// 1-bit format, hella funky
// here we unpack it:
unsigned char *src = bitmap.buffer;
for(unsigned int j=0; j <bitmap.rows;j++) {
unsigned char b=0;
unsigned char *bptr = src;
for(unsigned int k=0; k < bitmap.width ; k++){
aGlyph.pixels[2*(k+j*width)] = 255;
if (k%8==0){
b = (*bptr++);
}
aGlyph.pixels[2*(k+j*width) + 1] = b&0x80 ? 255 : 0;
b <<= 1;
}
src += bitmap.pitch;
}
//-----------------------------------
}
return aGlyph;
}
//-----------------------------------------------------------
bool ofTrueTypeFont::load(const std::filesystem::path& filename, int fontSize, bool antialiased, bool fullCharacterSet, bool makeContours, float simplifyAmt, int dpi) {
ofTrueTypeFontSettings settings(filename,fontSize);
settings.antialiased = antialiased;
settings.contours = makeContours;
settings.simplifyAmt = simplifyAmt;
settings.dpi = dpi;
if(fullCharacterSet){
settings.ranges = {ofUnicode::Latin1Supplement};
}else{
settings.ranges = {ofUnicode::Latin};
}
return load(settings);
}
bool ofTrueTypeFont::load(const ofTrueTypeFontSettings & _settings){
#if defined(TARGET_ANDROID)
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
#endif
initLibraries();
settings = _settings;
if( settings.dpi == 0 ){
settings.dpi = ttfGlobalDpi;
}
bLoadedOk = false;
//--------------- load the library and typeface
FT_Face loadFace;
if(!loadFontFace(settings.fontName, loadFace, settings.fontName)){
return false;
}
face = std::shared_ptr<struct FT_FaceRec_>(loadFace,FT_Done_Face);
if(settings.ranges.empty()){
settings.ranges.push_back(ofUnicode::Latin1Supplement);
}
int border = 1;
FT_Set_Char_Size( face.get(), settings.fontSize << 6, settings.fontSize << 6, settings.dpi, settings.dpi);
fontUnitScale = (float(settings.fontSize * settings.dpi)) / (72 * face->units_per_EM);
lineHeight = face->height * fontUnitScale;
ascenderHeight = face->ascender * fontUnitScale;
descenderHeight = face->descender * fontUnitScale;
glyphBBox.set(face->bbox.xMin * fontUnitScale,
face->bbox.yMin * fontUnitScale,
(face->bbox.xMax - face->bbox.xMin) * fontUnitScale,
(face->bbox.yMax - face->bbox.yMin) * fontUnitScale);
//--------------- initialize character info and textures
auto nGlyphs = std::accumulate(settings.ranges.begin(), settings.ranges.end(), 0u,
[](uint32_t acc, ofUnicode::range range){
return acc + range.getNumGlyphs();
});
cps.resize(nGlyphs);
if(settings.contours){
charOutlines.resize(nGlyphs);
charOutlinesNonVFlipped.resize(nGlyphs);
charOutlinesContour.resize(nGlyphs);
charOutlinesNonVFlippedContour.resize(nGlyphs);
}else{
charOutlines.resize(1);
}
vector<ofTrueTypeFont::glyph> all_glyphs;
uint32_t areaSum=0;
//--------------------- load each char -----------------------
auto i = 0u;
for(auto & range: settings.ranges){
for (uint32_t g = range.begin; g <= range.end; g++, i++){
all_glyphs.push_back(loadGlyph(g));
all_glyphs[i].props.characterIndex = i;
glyphIndexMap[g] = i;
cps[i] = all_glyphs[i].props;
areaSum += (cps[i].tW+border*2)*(cps[i].tH+border*2);
if(settings.contours){
if(printVectorInfo){
std::string str;
ofUTF8Append(str,g);
ofLogNotice("ofTrueTypeFont") << "character " << str;
}
//int character = i + NUM_CHARACTER_TO_START;
charOutlines[i] = makeContoursForCharacter( face.get() );
charOutlinesContour[i] = charOutlines[i];
charOutlinesContour[i].setFilled(false);
charOutlinesContour[i].setStrokeWidth(1);
charOutlinesNonVFlipped[i] = charOutlines[i];
charOutlinesNonVFlipped[i].translate({0,cps[i].height,0.f});
charOutlinesNonVFlipped[i].scale(1,-1);
charOutlinesNonVFlippedContour[i] = charOutlines[i];
charOutlinesNonVFlippedContour[i].setFilled(false);
charOutlinesNonVFlippedContour[i].setStrokeWidth(1);
if(settings.simplifyAmt>0){
charOutlines[i].simplify(settings.simplifyAmt);
charOutlinesNonVFlipped[i].simplify(settings.simplifyAmt);
charOutlinesContour[i].simplify(settings.simplifyAmt);
charOutlinesNonVFlippedContour[i].simplify(settings.simplifyAmt);
}
}
}
}
vector<ofTrueTypeFont::glyphProps> sortedCopy = cps;
sort(sortedCopy.begin(),sortedCopy.end(),[](const ofTrueTypeFont::glyphProps & c1, const ofTrueTypeFont::glyphProps & c2){
if(c1.tH == c2.tH) return c1.tW > c2.tW;
else return c1.tH > c2.tH;
});
// pack in a texture, algorithm to calculate min w/h from
// http://upcommons.upc.edu/pfc/bitstream/2099.1/7720/1/TesiMasterJonas.pdf
//ofLogNotice("ofTrueTypeFont") << "loadFont(): areaSum: " << areaSum
bool packed = false;
float alpha = logf(areaSum)*1.44269f;
int w;
int h;
while(!packed){
w = pow(2,floor((alpha/2.f) + 0.5f)); // there doesn't seem to be a round in cmath for windows.
//w = pow(2,round(alpha/2.f));
h = w;//pow(2,round(alpha - round(alpha/2.f)));
int x=0;
int y=0;
auto maxRowHeight = sortedCopy[0].tH + border*2;
packed = true;
for(auto & glyph: sortedCopy){
if(x+glyph.tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = glyph.tH + border*2;
if(y + maxRowHeight > h){
alpha++;
packed = false;
break;
}
}
x+= glyph.tW + border*2;
}
}
ofPixels atlasPixelsLuminanceAlpha;
atlasPixelsLuminanceAlpha.allocate(w,h,OF_PIXELS_GRAY_ALPHA);
atlasPixelsLuminanceAlpha.set(0,255);
atlasPixelsLuminanceAlpha.set(1,0);
int x=0;
int y=0;
auto maxRowHeight = sortedCopy[0].tH + border*2;
for(auto & glyph: sortedCopy){
ofPixels & charPixels = all_glyphs[glyph.characterIndex].pixels;
if(x+glyph.tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = glyph.tH + border*2;
}
cps[glyph.characterIndex].t1 = float(x + border)/float(w);
cps[glyph.characterIndex].v1 = float(y + border)/float(h);
cps[glyph.characterIndex].t2 = float(cps[glyph.characterIndex].tW + x + border)/float(w);
cps[glyph.characterIndex].v2 = float(cps[glyph.characterIndex].tH + y + border)/float(h);
charPixels.pasteInto(atlasPixelsLuminanceAlpha,x+border,y+border);
x+= glyph.tW + border*2;
}
int maxSize;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
if(w > maxSize || h > maxSize){
ofLogError("ofTruetypeFont") << "Trying to allocate texture of " << w << "x" << h << " which is bigger than supported in current platform: " << maxSize;
return false;
}else{
texAtlas.allocate(atlasPixelsLuminanceAlpha,false);
texAtlas.setRGToRGBASwizzles(true);
if(settings.antialiased && settings.fontSize>20){
texAtlas.setTextureMinMagFilter(GL_LINEAR,GL_LINEAR);
}else{
texAtlas.setTextureMinMagFilter(GL_NEAREST,GL_NEAREST);
}
texAtlas.loadData(atlasPixelsLuminanceAlpha);
bLoadedOk = true;
return true;
}
}
//-----------------------------------------------------------
bool ofTrueTypeFont::isLoaded() const{
return bLoadedOk;
}
//-----------------------------------------------------------
bool ofTrueTypeFont::isAntiAliased() const{
return settings.antialiased;
}
//-----------------------------------------------------------
bool ofTrueTypeFont::hasFullCharacterSet() const{
return true;
}
//-----------------------------------------------------------
int ofTrueTypeFont::getSize() const{
return settings.fontSize;
}
//-----------------------------------------------------------
void ofTrueTypeFont::setLineHeight(float _newLineHeight) {